package router

import (
	"fmt"
	"github.com/gin-gonic/gin"
	. "mwwow_service_go/handler"
	"net/http"
	"strings"
)

// 跨域
func Cors() gin.HandlerFunc {
	return func(c *gin.Context) {
		method := c.Request.Method               //请求方法
		origin := c.Request.Header.Get("Origin") //请求头部
		var headerKeys []string                  // 声明请求头keys
		for k, _ := range c.Request.Header {
			headerKeys = append(headerKeys, k)
		}
		headerStr := strings.Join(headerKeys, ", ")
		if headerStr != "" {
			headerStr = fmt.Sprintf("access-control-allow-origin, access-control-allow-headers, %s", headerStr)
		} else {
			headerStr = "access-control-allow-origin, access-control-allow-headers"
		}
		if origin != "" {
			c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
			c.Header("Access-Control-Allow-Origin", origin)                                    // 这是允许访问所有域
			c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE,UPDATE") //服务器支持的所有跨域请求的方法,为了避免浏览次请求的多次'预检'请求
			//  header的类型
			c.Header("Access-Control-Allow-Headers", "Authorization, Content-Length, X-CSRF-Token, Token,session,X_Requested_With,Accept, Origin, Host, Connection, Accept-Encoding, Accept-Language,DNT, X-CustomHeader, Keep-Alive, User-Agent, X-Requested-With, If-Modified-Since, Cache-Control, Content-Type, Pragma")
			//              允许跨域设置                                                                                                      可以返回其他子段
			c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers,Cache-Control,Content-Language,Content-Type,Expires,Last-Modified,Pragma,FooBar") // 跨域关键设置 让浏览器可以解析
			c.Header("Access-Control-Max-Age", "172800")                                                                                                                                                           // 缓存请求信息 单位为秒
			c.Header("Access-Control-Allow-Credentials", "true")                                                                                                                                                   //  跨域请求是否需要带cookie信息 默认设置为true
			c.Set("content-type", "application/json")                                                                                                                                                              // 设置返回格式是json
		}
		//放行所有OPTIONS方法
		if method == "OPTIONS" {
			c.JSON(http.StatusOK, "Options Request!")
		}
		// 处理请求
		c.Next() //  处理请求
	}
}

// 路由列表
func Router(router *gin.Engine) {
	baseURL := "/api/v3/"
	// 文章API
	router.POST(baseURL+"article", AddArticle)
	router.DELETE(baseURL+"article/:id", DelArticle)
	router.PUT(baseURL+"article/:id", UpdateArticle)
	router.GET(baseURL+"article", GetArticle)
	router.GET(baseURL+"notice", GetNoticeInfo)
	router.GET(baseURL+"article/:id", GetArticleById)
	router.POST(baseURL+"file", UploadFile)
	// 留言API
	router.POST(baseURL+"message", AddMessage)
	router.DELETE(baseURL+"message/:id", DelMessage)
	router.GET(baseURL+"message", GetMessage)
	// 类型API
	router.POST(baseURL+"type", AddType)
	router.DELETE(baseURL+"type/:id", DelMessage)
	router.PUT(baseURL+"type/:id", UpdateType)
	router.GET(baseURL+"type", GetType)
	// 用户API
	router.POST(baseURL+"login", CheckLogin)
	router.GET(baseURL+"user", GetUser)
	router.GET(baseURL+"user/:id", GetUserById)
	router.PUT(baseURL+"user/:id", ChangePassword)
	// 游研社API
	router.GET(baseURL+"yysTV", GetYysTV)
}

// 路由注册
func InitRouter() *gin.Engine {
	router := gin.Default()
	router.Use(Cors())
	Router(router)
	return router
}
